From 0cd0e57ec858edda580fb90b53df5269216b61b2 Mon Sep 17 00:00:00 2001 From: George Spelvin Date: Fri, 3 Jul 2020 15:19:57 +0200 Subject: scsi: zfcp: Use prandom_u32_max() for backoff We don't need crypto-grade random numbers for randomized backoffs. Instead use prandom_u32_max(ep_ro) which generates a pseudo-random number uniformly distributed in the interval [0, ep_ro). Link: https://lore.kernel.org/r/8fc7c4c4069ff1783f4a9ccd84a923f581a09ec5.1593780621.git.bblock@linux.ibm.com Reviewed-by: Steffen Maier Signed-off-by: George Spelvin Signed-off-by: Benjamin Block Signed-off-by: Martin K. Petersen --- drivers/s390/scsi/zfcp_fc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index b018b61bd168..d24cafe02708 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -48,7 +48,7 @@ unsigned int zfcp_fc_port_scan_backoff(void) { if (!port_scan_backoff) return 0; - return get_random_int() % port_scan_backoff; + return prandom_u32_max(port_scan_backoff); } static void zfcp_fc_port_scan_time(struct zfcp_adapter *adapter) -- cgit v1.2.3